Calculating machine



Mar. 20, 1923. 1,448,809e

ATTORNEY 3 SHEETS-SHEET s.

W. MOELLER,

CALCULATING MACHINE.

FILED MAY I3, i921.

Mal. 20, 1923.

Ulhlll l-nu mvENToR 0MM A oRm-:Y

Patented Mar. 20, 1923.

UNITED STATES n 1,448,809 PATENT OFFICE..

WILLIAM MOELLER, OF DORBANCETON BOROUGH, PENNSYLVANIA, ASSIGNOE TO WALES ADDING MACHINE COMPANY, OF WILKES-BARRE, PENNSYLVANIA, A COR- PORATION OF PENNSYLVANIA.

CALCULATING IACHIN E.

Application led Hay 13, 1921. Serial No. 469,092.

To all whom t may comem:

Be it known that L WILLIAM Momma, a citizen of the United States, residing in the borough of Dorranceton, Luzerne County, Pennsylvania, have invented new and useful Improvements inY Calculating Machines, of which the following is a specification.

More specifically, this invention relates to means to prevent the printing of signs under certain operating conditions of calculating machines, and in the present instance, I have chosen to illustrate one form ofthe invention as applied to the clear sign printing mechanism and controlled by the non-add mechanism, whereby to prevent the imprint of the clear sign designating the first item prin-ted after the accumulating mechanism has been cleared, when such first item or items are non-added.

A clear sign should be printed with the first item which is accumulated and printed, irrespective of the number of items printed and not accumulated intermediate a clearing l operation and the prin-ting of the first accumulated item thereafter.

The invention finds its greatest utility in listing designating items and amounts, as in listing car numbers and weights, check numbers and amounts or what not, wherein the vertical list of designating numbers which are not lto be accumulated, parallels the vertical list of amounts which are to be, accumulated, it being customary to list the.

designating number in one column, tabulate the carriage to the amount column, and list the correspondingamount on the same horizontal line with its designating number, after which the paper is line spaced and 4the carriage returned to the right to bring the column for designating numbers to the printing point opposite the types, whereupon the foregoing operation is repeated.

A. list of designating numbers and amounts printed on a Wales machine equipped with the usual clear and non-add sign printing mechanisms would appear as' follows:

Non-added designating Accumulated numbers. amounts.

Also in listing clerks numbers and sales, the designating number which is not arcumulated, may be printed at the head of a column of sales, followed by an itemized list of sales and a slip bearing such memoranda would heretofore appear as follows:

.72 1 8.92 6.50 4.33 19.75 (total) .73 1 (D .45 .83 .21 1.49 (total) It will be noted that in eac-h instance, the clear sign which is arranged to' print with the first item printed after the accumulating mechanism has been cleared, is located adjacent the first non-accumulated designating number, which in these examples, is the first printed number.

An Iobjection -to this is that the first cumulated amount is not accompanied by a clear sign to indicate that the machine was clear before such amount was accumulated, and the location of the clear sign opposite the first non-accumulated designating number is withoutl significance as it is immaterial, in listing such number, whether or not the accumulating mechanism was clear at that time.

One ob'ect attained by the present inven-v Other objects are to enable the operator to restrain or prevent the automatic print-` ing of a sign, at will, and to effect such restraint without disabling the sign printing mechanism in such manner as to require a further settin operation to restore it to its potentially e ective condition.

Another object is to enablerthe operator to, in effect, piint one sign indicating that an item was listed while the machine was operated under one condition or adjustment, in place of another sign which indlcates that an item was listed while the machine was operated under a different condition or adjustment, such last named sign being potentially operative, and ordinarily printed in the usual operation ot the machine.

To these and other ends, my invention includes certain novel features and combinations, all of which will be more fully set forth hereinafter and.` particularly pointed out in the claims. I

ln the accompanying drawings, Fig. 1 is a detail sectional view of a part of the welln known Wales calculating machine, showing the non-add Vand the clear sign printing mechanisms in their normal idle positions; Fig. 2 is a fragmentary top plan view, of the non-add key and its connected parts;

Fig. 3 is a detail showing in side elevation, the non-add mechanism and clear sign printing mechanism, the latter in cocked or potentially operative position;

Fig. 4 is asimilar view, showing the non- Iadd mechanism in operated'position, the

hammer having been released to print the non-add sign, the non -add mechanism being effective to restrain the clear sign printing mechanism against operation, and

Fig. 5 is a detail longitudinal sectional view through a machine of the well-known Wales type, illustrating the association ot the keyboard, accumulating and regular printing mechanism.

l have chosen t0 illustrate one embodiment of my invention as -applied to the wellknown- Wales calculating machine` disclosed in U. S. patents to Wales #794.205, July 11, 1905; #797,032, August 15, `1905; and #940,758, November 23. 1909. Bicktord #1,112,516, October 6, 1914; and Pentecost #1,302,965, May 6. 1919, to which reference is made for a more complete understanding of the various mechanisms involved.

1n the Wales machine` the denominational adding wheels 0r counters 490 are independently journaled on a numeral wheel vaxle 400, located above and extending across a denominational series of adding racks or drive members 310. Each counter is provided vvith a pinion 435, to engage and disengage from its corresponding adding rack 310 the axle 400. and consequently the counters 490 and pinions 435, being normally sustained at such a distance above the racks 310 as to retain the pinions out of engagement with their corresponding denominational adding racks or drive members 310.

1n accumulating operations, the racks 310 advance predetermined distances according to the item to be registered, while the counters 490 remain idle. After the racks have reached their various advanced ositions, the numeral wheel axle 400 lwith its counters 490 drops to engage the pinions 435 with the racks, after which the racks restore to their home positions, and in so doing, turn the counters through various angu- Latisana lar distances corresponding to the distances through which the racks have just previously advanced, to register the desired item on the counters.

After the racks arrive at their home positions, the axle 400|is raised to disengage the counters 490 and pinions 435 from the racks.

Front arms 312, andrear arms 311 support the adding racks 310, the front supporting arms being journaled on a cross shaft 300 and the rear supporting arms being journaled on a cross rod 301.

Each denominational rear supporting arm 311 is equipped with a rearward extension 311m connected by a link 515, with a typecarrier 514, the head of which carries a line of types 561 corresponding with the keys 117 in the respective denominational rows.

The racks or drive members 310 when advanced by the drive springs 383, position the typecarriers 514 to bring the types 561 corresponding to the depressed keys 117, to the printing line ot' a. platen 2094.

Printing occurs after the types have been positioned at the printing line. A universal detent 518 (Figs. 1 and 3) mounted on an oscillatory shaft 502 normally locks the denominational printing hammers -510 in cocked or set position. Individual dogs 511 also retain the respective printing hammers in cocked or set position, the dogs operating in the usual manner to release the hammers to print the types corresponding to the item set up on the keyboard, and restraining .the hammers to the left of the highest digit of the item, when the universal detent 518 is released. v Y

The printing hammers drive slidably mounted firing pins or plungers 562b against the type stems which are at 'the printing line` to impress the types on the work sheet carried by the platen.

Sometimes it is desired to print a number without adding or registering it on the counters. bviously. to e'ect such result, it is only necessary to prevent the engagement of the counters or adding wheels 490 with their drive members or adding racks 310.

rlhis may be accomplished, as shown in patent to McFarland #1,024,013` April 23. 1912, by means of a key 491. having a pin and slot connection 458 with a crank 422 tast on a suitably journaled shaft 404. A spring 583 normally holds the key 491 in its uppermost position with the lower end wall of the slot against. the piu 458. Hooks or detaining members 417 fixed on the shaft 404, normally lie in idle position relatively to the axle 400 on which the numeral wheels or counters 490 are journaled, as shown in Figs. 1 and 3. but depression of the key 491. when the counter axle 400- is in its normal elevated position, rocks the shaft 404 against the tension of a retracting spring 481, to

(see Fig. 4) and through a swin the non-add Ahooks 417 under the numera wheel axle 400 to hold the numeral wheels or their pinions 435 out of engagement with their racks 310.

The stem of key 491 projects outwardly through an aperture in the usual case 1065 ide slot in an escutcheon plate 1018d coverlng the aperture in the casing.

The stem of the key 491 is providedwith a notch 491y adapted to accommodate the lip of a cam 514" fast on a shaft 500" rocked at each operation of the machine.

Depression of the key 491 registers the notch 4,91y with the lip of the cam 514" after which the key can be rocked rearwardly on its stud 458 to fit thenotch over the lip of the cam, to hold the key depressed.

The key is further equipped with a shoulder 491x which, upon depression of the key, is brought to a plane beneath the lower surface of the escutcheon plate 1018", and when the key is rocked to fit thenotch 491y over the lip of the cam 514", the shoulder 491x is brought beneath the escutcheon plate. A spring 589" yieldingly maintains the key in its rearwardly adjusted position.

Upon operating the machine, the shaft 500 rocks the cam 514" rearwardly, releasing the key 491 to the action of its spring 583, which partially restores the key, but its action is arrested by contact of the shoulder 491? with the escutcheon plate 1018"l before the retracting spring 481 can withdraw the y retaining hooks 417 to release the counter axle 400, as shown in Fig. 4.

The partial restoration of the key. 491 positions an unnotched portion of the key stem opposite 'the cam 514", and when the operation of the machine is about completed, the lip of the cam 514" on its return, contacts such unnotched port-.ion and rocks the key 491 to disengage the shoulder 491x from the escutcheon plate. This frees the key 491 and retaining hooks 417 to the action of the retracting spring 481 which shifts the hooks to their ineiective or idle positions, and restores the key to its normal osition.

The non-add mechanism as no effect on the printing, which occurs just as if the number had been accumulated on the. counters.

It is desirable to print a sign indicating that the designating or other non-added item, has not been accumulated, to which end, the Wales machine has been equipped' with a sign typecarrier 514x similar to the regular typecarriers 514, Fig. 5, but` pro! vided with special sign printing 'types in place of the usual digit or numeral printing types. The non-add sign printing type 561x (Fig. 2) is located at the upper end of the typecarrier 514x and normally lies at the printing line on the platen.

A special sign printing hammer 517" jourcept when the imprint of a special sign isdesired. A lightspring 581t maintains the dog in its effective position.'

Obviously, since the universal detent 518 releases the sign printing'hammer 517I at each operation, it is only necessary to displace the individual dog 511e in order to effect sign printing. Depression of the nonadd key 491 depresses the crank 422, which carries a stud 257d overlying the forwardly projecting arm of a releasing'bail lever 511" journaled on a cross rod 601". The stud 257", by contact with the forwardly projecting arm of the releasing bail lever 511", rocks the latter downwardly 'and consequently causes the rearwardly pro'ectin arm ofthe bail lever to swing upwar ly. g spring 682 connects the rearwardly projecting arm of the bail lever 511" and the tail -of the individual dog 511", and as the rearwardly projecting arm 511" swings upwardly, it tensions spring 682 to. overcome spring 581t and withdrawA the dog 511e to ineffective position, so that the special sign printing hammer 517 is restrained in cocked position only by the universal detent 5'18.

Upon o eration of the machine, the detent 518 is li ted, releasing the sign printing hammer 517*l to print1 the non-add slgn.

It is customary in Wales machines, to provide means whereby the first item printed after the counters have been cleared may be designated by a clear signal to indicate that the machine Was clear prior to the entry of such first item.

One such mechanism isset forth in U. S. patent to Wales #940,7 58, \November 23, 1909 to which reference is made for a more complete disclosure thanrthat which follows.

Referring to the accompanying drawings, the clear sign t'ype 513x is mounted on one end of the cross piece of a T-shaped lever 513f, the stem of which is suitably pivoted at 558", a spring 581d normally holding the type and lever withdrawn from the printing line on the platen. f

Type im ressions of the clear sign are effecte'd by t e impact of a clear sign printing The clear sign printing hammer 511d is lournaled on a bushing 549 fast in the right and printer side frame 565, and normally lies in its discharged or fired position, shown in Fig. 1. During the operation of taking a` sprlng 586 connects the crank 516d with one j arm of a lifting lever 515, the opposite longer arm of which carries a pin 1857 entered in a slot in the upper end of a lifting link 5141. The lower end of the lifting link is pivotally connected b a stud 553 to a latch 513d pivoted at 257 to the clear sign printing hammer 5111.

The units printing hammer 510 (Fig. 2) carries a laterally projecting clear sign hammer setting stud 557d with which the latch I513d coacts when the clear sign printing hammer 511d is to be set or cocked.

Normally the rear arm of the lifting lever 515d'lies Tin its lowered position (shown in Fig. 1) the upper end wall of the slot in the link 514d resting upon the pin 1857, and the hammer cocking latch 513i lying in its lowered idle position to which. it is drawn by its spring 587, out of the path of the resetting stud 5571..

During a clearing operation, the rock shaft 500d oscillates, swinging the crank 516x I and tensioning the spring 586, linking the crank with the shorterarm of the lever 5151, to rock the lever and raise the longer arm thereof, together with the lifting link 514f* and the latch 513d until the recessed free end of the latch lies in the path of the cocking stud 557d carried by the units printing hammer 510. The latch 513i is positioned prior to the resetting of the units printing hammer, which latter, as it is restored to cocked position, presses the cocking stud 557l against the latch 513d to force the latter forwardly and swing the clear sign printing hammer 511'1 to its cooked or potentially'operative position (shown in Fig. 3) against the tension of its drive spring 585, one end of which may be conveniently connected to the same stiid 553d which connects the lifting link 514d t0 the latch 5131.;l

At the conclusion of-ithe clearing operation, the rock `shaft 500d returns to its normal position, thereby relaxing the spring 586 to permit the lifting lever 515d to restore to idle position with its pin 1857 at the lower end of the slot in the lifting link 5141. This enablesy the link 514d Iand latch 513d to drop to idle position under the infiuence of the spring 587 after the release of the latch by t e cooking stud 5571.

Such release of the latch 513d does not occur until the first item is printed after the clearing o ration. 4

Obviou y, so long as the stud 557d of the carrying lever 513 towards the platen 2094 A to impress the clear sign on the work sheet adjacent to the printed item.

The cocking stud 557 d has a longer path of travel than the latch 513d of the clear sign printing hammer, and consequently, withdraws' from the latch to enable the spring 587 to displacethe latch from the path of the cocking stud, the position of the lifting pin 1857 at the lower end of the slot in the lifting link 5141- permitting such displacement of the latch, whereby to prevent lrecocking of the clear sign printing hammer until the mechanism is reset during a clearing operation.

rlhe sign printing hammer 517 a has an arcuate slot 510y (Fig. 4) which embraces the cooking stud 557dto enable the hammerv517a to operate while the cocking stud maintains the clear sign printing hammer'511d cocked.

The foregoing is old in the art and constitutes a part of the present invention only in so far as it cooperates with the novel features explained hereinafter.

As hereinbe'ore stated, it is frequently desired in various classes of Work, to print a designating number, as a clerks number, check number, car number or the like, prior to entering an amount identified by or associated with such designating number. on the accumulator. The designating number is not registered on the counters 490, but ordinarily the clear sign would be printed alongside such non-added designating number as an incident to the first operation of the units printing hammer after a clearing operation.

The embodiment of my invention illustrated in the drawings is ydirected to means to prevent the printing of the clear sign 513x with the first and succeeding numbers printed after a clearing operation, providing such numbers are non-added, the mechanism permitting the printing of the clear sign only with the first amount accumulated on the counters andA printed, after a clearing operation. f

It will be understood, however, that my invention is susceptible of other applications than that herein set forth.

As a convenient means controllable by the non-add key 491 to effect this result. 1 arrange to restrain the clear sign printing hammer-511d against operation, and further, to maintain such hammer -in :ocked or set position so that it may function at the proper time and thus avoid the necessity of resetting the hammer.

The rearwardly projecting arm of the releasing bail lever 511b carries a lateral projection or lip 511x entered in a slot 511z formed in a depending, offset arm of an arresting lever 511y pivoted on a stud 550x and having a forwardly projecting arm shiftable into and out of the path of the stud 553 which connects the lifting link 514 and .the latch 513 Assuming that the clear sign printing hammer 511 is in cocked position, depression of the non-add key 491 will rock the releasing bail lever 511", as above explained, causing the projecting lip 511X to traverse the slot 511Z in the offset arm of the arresting lever 511y untilit contacts the upper end wall of the slot and swings the recessed end of the forward arm of the arrestinglever 511y into the path of and closely adjacent to the stud 553 Locking the key 491 in depressed position retains the forward arm of the arresting lever 511y where adjusted.

Upon-the ensuing operation of the machine, the individual dogs (similar to the special sign printing hammer dog 511) release the regular or digit printing hammers 510 corresponding with the denominations of the digits. composing the designating numberto be printed, but not accumulated, and the universal detent 518 is displaced to `free the regular hammers, including the units hammer 510 and the special sign printing hammerl'a for operation.

The units hammer 510 (-Fig. 2) .which carries the clear sign hammer resetting stud 557 withdraws from the resetting latch 513` thereby freeing the. clear sign printing hammer 511 for operation were it not for the presence of the arresting member 511y in the path of the stud 553, which prevents the operation of the clear sign printing hammer and retains it in cocked position until the resetting stud 557 on the units printing hammer is restoredvby the cooking of such units hammer, to its normal position. The resetting stud 557, as it returns with its hammer 510, again contact'swith latch 513 and -restores the clear sign printing hammer 511 to its fully cocked position, thereby removing the connecting stud 553 from its seat in the recessed end of the arresting member 511y to permit the latter to drop back to idle position as the non-add key 491 is released 4by its cam 514 and springs upwardly to its normal undepressed position.

The recessed end ofthe arresting member 511y serves to prevent the accidental displacement of the latch 513 during the temporary withdrawal of the resetting pin 557, the. arresting member being held against shifting to idle osition, by the contact of the lip 511x of tlie bail lever 511? with the upper end of the slot 511, and against shifting past its effective position, by contact of the tail of the arresting member with a suitable abutment or stop 2050 on the printer frame of the machine.

It will be understood that although the arresting member 511y drops back yto idle position after each non-add operation, providing the non-add key is not intentionally held depressed, it will be restored to operative position upon each depression of the non-add key, even after the clear sign printing hammer 511 has been fired with the first amount accumulated and printed' after a clearing operation.

It will be remembered that the clear printing hammer 511 normally remains in its discharged position and that the resetting latch 513 and its stud 553 are normally lowered, so that although the arrestsign ing member 511y shifts to operative position at each depression of the non-add key 491, it does not become effective unless the clear sign printing hammer is cocked.

Obviously', the non-add mechanism will adjust lthe arresting member 511y to effective position irrespective of the means which. may be employed to set the non-add mechamsm.

Changes may be made in the form and arrangement of the several parts set 'forth and the idea is capable of various other applications without departing from the spirit and scope of this invention.

lV hat I claim as new is A 1. In a calculating machine, the combination vwith accumulating mechanism; printing mechanism; sign-printing mechanism to item prlnted after the accumulating mechanism is cleared; and non-add means operable to prevent the registration of numbers on the accumulating mechanism while permitting the printing mechanism to print such numbers; of means operable as an incident to the operation of the non-add means to prevent the operaton of the clear sign printing mechanism.

`2. In a calculating machine, the combination with accumulating and printing mechanisms; sign printing mechanism to automatically print a sign to designate the first item printed after the'accumulating mechanism has been cleared, such sign print-l ing mechanism including a hammer; and non-add mechanism to prevent the registration of numbers on the accumulating mechanism regardless of the printing mechanism; of means controlled by the non-add mechanism, to prevent the printing of the sign with the first item printed after the accumulating mechanism has been` cleared,` including means shiftable into the path of the sign printing hammer to prevent its operation.

3. lln a calculating machine, the combina- .tion with accumulating and printing'mechvanisms; clear sign printing mechamsm to ing mechanism; of non-add sign printing mechanism, including a hammer; normally effective locking means individual to said non-add sign printing hammer; means to prevent the printing of the clear sign to designate the first item printed after the accumulating mechanism has been cleared; and means controlled by the non-add mechanism to disable the normally effective locking means for the non-add sign printing hammer, and to. shift to effective position' the means for preventing the printing of theclear sign.

4c. ln a calculating machine, the combination with accumulating and printing mechanisms; sign printing mechanism, to automatically print a sign ,todesignate the first item printed after the accumulating mechanism has beenv cleared, such sign printing mechanism including a hammer; and non-add mechanism to prevent the registration of items on the accumulating mechanism; of a lever controlled by the non-add mechanism, and a normally idole arresting member shiftable by the lever to prevent the effective operation of the/sign printing hammer.

5. In a calculating machine, the combination with accumulating and printing mechanisms; sign printing mechanism to automatically print a sign to designate the first item printed after the accumulating mechanism has been cleared, such sign printing mechanism including a hammer; and nonadd mechanism topreventthe registration of items on the accumulating mechanism;

' of a lever controlled by the non-add vmechanism, and a normally idle arresting member having an offset arm engaged by the lever to shift the arresting member to position to prevent the effectiye operation of the sign printing hammer: v

6. ln a calculating` machine, the combination with accumulatingl and printing mechanisms: sign printing mechanism to automatically printa sign to designate the first item printed after the accumulating mechanism has been cleared, such sign printing mechanism including a hammer; and nonadd mechanism td prevent the registration of items on the-accumulating mechanism; of a lever controlled bv the non-add mechanism: and a pivotally supportedarresting member shiftable by the lever to prevent the innesca mechanism including a hammer; and non-` add mechanism to prevent the registration of items on the accumulating mechanism; of a lever controlled by the non-add mechanism; and av pivotally supported arresting member having a slot formed therein and entered by said lever, to enable the lever to shift the arresting member to position to prevent the effective operation of the sign printing hammer.

8. In a calculating machine, the combination with accumulating and printing mechanisms; sign printing mechanism to automatically print a sign to designate the first item printed after the accumulating mechanism has been cleared, the sign printing mechanism including a normally discharged hammer; means controlled by the printing mechanism to cock the sign printing hammer and hold it in cocked position until the printing of the first item after a clearing operation; and non-add mechanism to prevent the registration of an item on theaccumulating mechanism regardless of the printing of such item; of means controlled by the non-add mechanism to arrest the sign printing hammer against operation and vmaintain it in set position to be re-engaged by the cocking and holding means upon the restoration ofthe printing mechanism to normal position.

9., In a calculating machine, the combinationy With accumulating and regular printing mechanisms; sign printing mechanism to automatically print a sign. to designate the first item `printed after the accumulating mechanism has been cleared, the si n printing mechanism including anormally discharged hammer; means controlledby a denominational hammer of the regular printing mechanism to cock the sign printing hammer and retain it in cocked position as long as the denominational hammer remains cocked after ythe clearing operation, the sign printing hammer. normally adapted to operate with the denominationalhammer to print the sign with lthe first item printed after a clearing operation; non-add mechanism to prevent the registration of items on the accumulating mechanism; and non-add sign printing mechanism independentof the clear sign printing mechanism; of means controlled by the non-add 10. In a calculating machine, the combination with accumulating and printing mechanisms; and automatically operating sign printing mechanism; of a normally idle arresting member shiftable at will to effective position to prevent the operation ofthe sign printing mechanism.

11. In a calculating machine, the combi-v nation with accumulating and printing mechanisms; and sign printing mechanism to automatically print a sign to designate the first item printed after the accumulating mechanism has been cleared; of means .under the control of the operator to prevent the operation of the sign printing mechanism when the accumulating mechanism is rendered inoperative, and to maintain the sign printing means potentially operative.

12. In a calculating machine, the combination With accumulating and printing mechanisms; separate sign printing mechanisms; one of which is adapted to print a sign to designate the first item printed after the accumulating mechanism is cleared;

and means to control theprinting of various signs by the remaining sign printing mechanism; of a device controlled by one of said last named means to prevent the operation of the clear sign printing mechanism.

13. In a calculating machine, the combination with accumulating and printing mechanisms; separate sign printing mecha-I nisms, one of which is normally discharged and the other of which is normally potentially operative; means to clear the accumulating means; means controlled by the clear-,f

ing means to set the normally discharged sign printing mechanism to potentially o erative position; and means to control the printing of various signs by that sign printing mechanism which is normally potentially operative; of a device controlled by one of said last-named means to prevent the operation ofthe remaining sign printing mechanism and maintain it in potentially operative position.

14. In a. calculating machine, the combination with accumulating and printing mechanisms; and separate sign printingv mechanisms, each of which has a s1 normally positioned at the printing llne; of means to control the operation of one of said printing mechanisms, and to prevent the operation of the other of said sign printing mechanisms.

15. In a calculating machine, the combinationv with accumulating andprinting mechanisms; and separate `sign mechanisms, each of which has a s1 normally positioned at the printing llne; of. means to control the operation of one of said sign printing mechanisms, andto prevent the operation of the other of said sign .printing mechanisms and maintain such lastnamed sign printing mechanism in potentially operative position.

16. In a calculating machine, the combination withl accumulating and.` printing mechanisms; and separateV sign printing mechanisms; of means to controlthe operation of one of` said sign printing mechanisms, and to prevent the operation of the other of said sign printing mechanisms. l

. 17. In a calculatm machine, the combination with accumu ating and printing mechanisms; and independently operable sign printing mechanisms; of means to control the operation of one of said sign printing mechanisms and prevent the operation of the other sign printing mechanism.

WILLIAM AMIOELLER.

printing 

